Technical data
Product specifications
Metric and imperial values are paired where the manufacturer provides both. Expand a section to review its parameters.
Core specifications14 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Series | QJ1248 | |
| Bore diameter | d | 240 mm |
| Outside diameter | D | 440 mm |
| Width | B | 85 mm |
| Basic dynamic load rating | C | 660 kN |
| Basic static load rating | C0 | 1220 kN |
| Fatigue load limit | Pu | 38 kN |
| Reference speed | nref | 1390 r/min |
| Limiting speed | nG | 2600 r/min |
| Mass | ≈m | 61.6 kg |
| Precision class | PN — Normal (ISO 492:2023) | |
| Cage | MPA — Solid brass cage, outer ring guided | |
| Minimum operating temperature | Tmin | -30 °C |
| Maximum operating temperature | Tmax | 200 °C |
Product characteristics4 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Tolerance class | PN | Normal (ISO 492:2023) |
| Cage | MPA | Solid brass cage, outer ring guided |
| Dimensional / heat stabilization | S1 | Rings dimensional stabilized up to 200° |
| Axial internal clearance | CN | Group N (CN) |
Main Dimensions & Performance Data9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore diameter | d | 240 mm9.449 in |
| Outside diameter | D | 440 mm17.323 in |
| Width | B | 85 mm3.346 in |
| Basic dynamic load rating, radial | Cr | 660,000 N148,381.295 lbf |
| Basic static load rating, radial | C0r | 1,220,000 N274,280.576 lbf |
| Fatigue load limit, radial | Cur | 38,000 N8,543.165 lbf |
| Limiting speed | nG | 2,600 1/min |
| Reference speed | nϑr | 1,390 1/min |
| Mass | ≈m | 61.6 kg135.805 lbs |
Mounting dimensions3 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum diameter shaft shoulder | da min | 257 mm10.118 in |
| Maximum diameter of housing shoulder | Da max | 423 mm16.654 in |
| Maximum fillet radius | ra max | 3 mm0.118 in |
Dimensions5 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Minimum chamfer dimension | rmin | 4 mm0.157 in |
| Shoulder diameter outer ring | D1 | 367.9 mm14.484 in |
| Shoulder diameter inner ring | d1 | 314.95 mm12.4 in |
| Distance between the apexes of the pressure cones | a | 340 mm13.386 in |
| Contact angle | α | 45 ° |
Temperature range2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Operating temperature min. | Tmin | -30 °C-22 °F |
| Operating temperature max. | Tmax | 200 °C392 °F |
Capabilities & suitability7 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Radial load capacity | Yes | |
| Axial load capacity in one direction | Yes | |
| Axial load capacity in both directions | Yes | |
| Suitable for grease lubrication | Yes | |
| Suitable for oil lubrication | Yes | |
| Unsealed design | Yes | |
| Largebearing | Yes |
Manufacturer Identity9 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Schaeffler Product Code | 366473 | |
| Brand | FAG | |
| Base Type | QJ1248 | |
| Old Designation | ["QJ1248MPA"] | |
| SAP material number | 0192600590000 | |
| Base product | 230508AD41 | |
| Bearing X designation | QJ1248-MPA | |
| Mounting Manager ID | QJ1248-MPA | |
| Grease application ID | QJ1248-MPA |
Product Identity2 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Construction | Four point contact bearing QJ12..-MPA, solid brass cage | |
| Short Description | Four-point contact bearing |
Technical Data18 parameters
| Parameter | Symbol | Value |
|---|---|---|
| Bore Diameter (D) | 240 mm | |
| Outside Diameter (D) | 440 mm | |
| Width (B) | 85 mm | |
| Basic Dynamic Load Rating, Radial (Cr) | 660,000 N | |
| Basic Static Load Rating, Radial (C0R) | 1,220,000 N | |
| Operating Temperature Min. (Tmin) | -30 °C | |
| Limiting Speed (Ng) | 2,600 1/min | |
| Operating Temperature Max. (Tmax) | 200 °C | |
| Reference Speed (Nϑr) | 1,390 1/min | |
| Fatigue Load Limit, Radial (Cur) | 38,000 N | |
| Minimum Diameter Shaft Shoulder (Da Min) | 257 mm | |
| Shoulder Diameter Inner Ring (D1) | 314.95 mm | |
| Maximum Diameter Of Housing Shoulder (Da Max) | 423 mm | |
| Minimum Chamfer Dimension (Rmin) | 4 mm | |
| Maximum Fillet Radius (Ra Max) | 3 mm | |
| Shoulder Diameter Outer Ring (D1) | 367.9 mm | |
| Contact Angle (Α) | 45 ° | |
| Distance Between The Apexes Of The Pressure Cones (A) | 340 mm |
